AD 2008-07-11 R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus Aircraft Limited | PC-12 | Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes |
| aircraft | Pilatus Aircraft Limited | PC-12/45 | Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes |
| aircraft | Pilatus Aircraft Limited | PC-12/47 | Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes |
Unsafe Condition
Flight Controls
Required Actions
Rescind AD 2008-07-11 as the unsafe condition is now addressed in another AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Effective March 25, 2013.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pilatus Aircraft Limited Models PC-12, PC-12/45, and PC-12/47 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Flight Controls
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - 2008-07-11 R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2008-07-11 R1 Document Type: AD Final Rules Docket Number: FAA-2008-0070 Subject Heading: Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes Subject: Flight Controls Status: Current Citation: Federal Register Volume 78, Number 57 (Monday, March 25, 2013) Citation Publish Date: 03/25/2013 Effective Date: 03/25/2013 Make: Pilatus Aircraft Limited Model: PC-12 | PC-12/45 | PC-12/47 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 5 1 [Federal Register Volume 78, Number 57 (Monday, March 25, 2013)] [Rules and Regulations] [Pages 17865-17866] From the Federal Register Online via the Government Printing Office [www.gpo.gov] [FR Doc No: 2013-06169] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2008-0070; Directorate Identifier 2007-CE-098-AD; Amendment 39-17398; AD 2008-07-11 R1] RIN 2120-AA64 Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; rescission; request for comments –––––––––––––––––––––––––––––––––– SUMMARY: We are rescinding an airworthiness directive (AD) for all PILATUS AIRCRAFT LTD. Models PC-12, PC-12/45, and PC-12/47 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. We issued that AD to mandate new life limits for the pitch trim actuator and pitch trim actuator attachment parts. If these new limitations were not mandated, the pitch trim actuator and the pitch trim actuator components could fail. This failure could lead to an unsafe flying configuration. Since we issued that AD, we have determined that the unsafe condition addressed in that AD is now addressed in another AD. DATES: This AD is effective March 25, 2013. We must receive comments on this AD by May 9, 2013. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. • Fax: (202) 493-2251. • Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. 2 Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (telephone (800) 647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329- 4059; fax: (816) 329-4090; email: doug.rudolph@faa.gov. SUPPLEMENTARY INFORMATION: Discussion On March 27, 2008, we issued AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4, 2008). That AD required actions intended to address an unsafe condition on the products listed above. AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4, 2008) was based on results of a full-scale fatigue test of the pitch trim actuator on PILATUS AIRCRAFT LTD. Models PC-12, PC- 12/45, and PC-12/47 airplanes. The life-limit was extended and the time between overhaul (TBO) was reduced. In addition, based on the results of the fatigue test, a life-limit of the pitch trim actuator attachment had been established. These new limitations were incorporated into the airworthiness limitations section of the Pilatus PC-12 Airplane Maintenance Manual (AMM) 12-A/AMP-04, chapter 4, revision 10, dated October 26, 2007. The new limitations for the pitch trim actuator TBO were moved from Chapter 5: Time Limits/Maintenance Checks, to Chapter 4: Structural, Component and Miscellaneous–Airworthiness Limitations. Since both chapter 4 and chapter 5 are mandatory within the European and Swiss airworthiness systems, it was not necessary for the European Aviation Safety Agency (EASA) and the Federal Office of Civil Aviation (FOCA) to issue an AD to mandate these new limitations. The only way the FAA can mandate the implementation of changes to the airworthiness limitations section of an FAA-approved maintenance program is by AD action. On February 8, 2013, we issued AD 2012-26-16, Amendment 39-17311 (78 FR 11572, February 19, 2013). AD 2012-26-16 also requires incorporating new revisions into the Limitations section, Chapter 4, of the Pilatus PC-12 AMM. The limitations were revised to include an inspection of the wing main spar fastener holes at rib 6 for cracks. After issuing AD 2012-26-16, Amendment 39-17311 (78 FR 11572, February 19, 2013), we determined that AD 2008-07-11 should have been superseded by AD 2012-26-16. Since AD 2008- 07-11 requires incorporating an earlier version of the airworthiness limitations section of the AMM, it could cause confusion for the owners/operators and could result in missed inspections and replacements required by AD 2012-26-16. Therefore, the need to continue to address this subject as an unsafe condition through AD 2008-07-11 is no longer necessary. FAA's Determination We are issuing this AD because we evaluated all available information and determined the existing AD is no longer necessary. AD Requirements This AD would rescind AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4, 2008).
Document Text
Show stored source text (verify against official source)
AD Final Rules - 2008-07-11 R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2008-07-11 R1 Document Type: AD Final Rules Docket Number: FAA-2008-0070 Subject Heading: Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes Subject: Flight Controls Status: Current Citation: Federal Register Volume 78, Number 57 (Monday, March 25, 2013) Citation Publish Date: 03/25/2013 Effective Date: 03/25/2013 Make: Pilatus Aircraft Limited Model: PC-12 | PC-12/45 | PC-12/47 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 5 1 [Federal Register Volume 78, Number 57 (Monday, March 25, 2013)] [Rules and Regulations] [Pages 17865-17866] From the Federal Register Online via the Government Printing Office [www.gpo.gov] [FR Doc No: 2013-06169] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2008-0070; Directorate Identifier 2007-CE-098-AD; Amendment 39-17398; AD 2008-07-11 R1] RIN 2120-AA64 Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; rescission; request for comments –––––––––––––––––––––––––––––––––– SUMMARY: We are rescinding an airworthiness directive (AD) for all PILATUS AIRCRAFT LTD. Models PC-12, PC-12/45, and PC-12/47 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. We issued that AD to mandate new life limits for the pitch trim actuator and pitch trim actuator attachment parts. If these new limitations were not mandated, the pitch trim actuator and the pitch trim actuator components could fail. This failure could lead to an unsafe flying configuration. Since we issued that AD, we have determined that the unsafe condition addressed in that AD is now addressed in another AD. DATES: This AD is effective March 25, 2013. We must receive comments on this AD by May 9, 2013. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. • Fax: (202) 493-2251. • Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. 2 Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (telephone (800) 647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329- 4059; fax: (816) 329-4090; email: doug.rudolph@faa.gov. SUPPLEMENTARY INFORMATION: Discussion On March 27, 2008, we issued AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4, 2008). That AD required actions intended to address an unsafe condition on the products listed above. AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4, 2008) was based on results of a full-scale fatigue test of the pitch trim actuator on PILATUS AIRCRAFT LTD. Models PC-12, PC- 12/45, and PC-12/47 airplanes. The life-limit was extended and the time between overhaul (TBO) was reduced. In addition, based on the results of the fatigue test, a life-limit of the pitch trim actuator attachment had been established. These new limitations were incorporated into the airworthiness limitations section of the Pilatus PC-12 Airplane Maintenance Manual (AMM) 12-A/AMP-04, chapter 4, revision 10, dated October 26, 2007. The new limitations for the pitch trim actuator TBO were moved from Chapter 5: Time Limits/Maintenance Checks, to Chapter 4: Structural, Component and Miscellaneous–Airworthiness Limitations. Since both chapter 4 and chapter 5 are mandatory within the European and Swiss airworthiness systems, it was not necessary for the European Aviation Safety Agency (EASA) and the Federal Office of Civil Aviation (FOCA) to issue an AD to mandate these new limitations. The only way the FAA can mandate the implementation of changes to the airworthiness limitations section of an FAA-approved maintenance program is by AD action. On February 8, 2013, we issued AD 2012-26-16, Amendment 39-17311 (78 FR 11572, February 19, 2013). AD 2012-26-16 also requires incorporating new revisions into the Limitations section, Chapter 4, of the Pilatus PC-12 AMM. The limitations were revised to include an inspection of the wing main spar fastener holes at rib 6 for cracks. After issuing AD 2012-26-16, Amendment 39-17311 (78 FR 11572, February 19, 2013), we determined that AD 2008-07-11 should have been superseded by AD 2012-26-16. Since AD 2008- 07-11 requires incorporating an earlier version of the airworthiness limitations section of the AMM, it could cause confusion for the owners/operators and could result in missed inspections and replacements required by AD 2012-26-16. Therefore, the need to continue to address this subject as an unsafe condition through AD 2008-07-11 is no longer necessary. FAA's Determination We are issuing this AD because we evaluated all available information and determined the existing AD is no longer necessary. AD Requirements This AD would rescind AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4, 2008).
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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